Dear , We are writing to you on behalf of your work on image registration and you work: “” (). We would like to invite you to participate in image registration methods to participate in the new Automatic Non-rigid Histological Image Registration (ANHIR) challenge to be held at the ISBI 2019 conference in Venice in April 2019. The task consists of registering multi-stain histology images. For more detail visit our webpage: https://anhir.grand-challenge.org Looking forward to your possible participation, Jiri Borovec & Arrate Munoz-Barrutia & Jan Kybic & Ignacio Arganda